Mr. McGee is the manager of the washer and dryer department of an appliance store. He wants to estimate the probability that a customer who comes to his department will buy a washer or dryer. He collected the following data during one week:
Make a two-way table. Using Mr. McGee’s data, what is the probability that the next customer who comes to his department will purchase a washer or a dryer?
did not purchase
purchased washer row 1 blank
did not purchase washer row 1 blank
right edge top
did not purchase dryer
purchased washer row 2 blank
did not purchase washer row 2
right edge bottom blank
bottom edge left
bottom edge right blank
%. Make sure you know how to calculate this from your two-way table.
Mr. McGee promises his sales people a bonus if they can increase the probability that the customers who buy washers also buy dryers. What is the probability that if a customer bought a washer, he or she also bought a dryer?
How many people purchased washers?
Of those who purchased washers, how many bought dryers?